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discourse-custom-wizard-unl.../assets/javascripts/wizard/lib/utilities-lite.js.es6
2018-02-08 12:30:55 +08:00

60 Zeilen
2,1 KiB
JavaScript

// lite version of discourse/lib/utilities
export function determinePostReplaceSelection({ selection, needle, replacement }) {
const diff = (replacement.end - replacement.start) - (needle.end - needle.start);
if (selection.end <= needle.start) {
// Selection ends (and starts) before needle.
return { start: selection.start, end: selection.end };
} else if (selection.start <= needle.start) {
// Selection starts before needle...
if (selection.end < needle.end) {
// ... and ends inside needle.
return { start: selection.start, end: needle.start };
} else {
// ... and spans needle completely.
return { start: selection.start, end: selection.end + diff };
}
} else if (selection.start < needle.end) {
// Selection starts inside needle...
if (selection.end <= needle.end) {
// ... and ends inside needle.
return { start: replacement.end, end: replacement.end };
} else {
// ... and spans end of needle.
return { start: replacement.end, end: selection.end + diff };
}
} else {
// Selection starts (and ends) behind needle.
return { start: selection.start + diff, end: selection.end + diff };
}
}
const toArray = items => {
items = items || [];
if (!Array.isArray(items)) {
return Array.from(items);
}
return items;
};
export function clipboardData(e, canUpload) {
const clipboard = e.clipboardData ||
e.originalEvent.clipboardData ||
e.delegatedEvent.originalEvent.clipboardData;
const types = toArray(clipboard.types);
let files = toArray(clipboard.files);
if (types.includes("Files") && files.length === 0) { // for IE
files = toArray(clipboard.items).filter(i => i.kind === "file");
}
canUpload = files && canUpload && !types.includes("text/plain");
const canUploadImage = canUpload && files.filter(f => f.type.match('^image/'))[0];
const canPasteHtml = Discourse.SiteSettings.enable_rich_text_paste && types.includes("text/html") && !canUploadImage;
return { clipboard, types, canUpload, canPasteHtml };
}